X220 SDHC/SDXC card reader--speed with UHS-1

The X220multimedia card reader in the x220 works on the PCI bus and can read SDXC cards. I have seen comments here that it reads the UHS-1 cards. Can it make full use of the read/write speeds of the latest cards,such as the SanDisk Extreme Pro? Also, does it matter whether NTSF or exFAT is used when the card is used as a backup device, not intended for use in a camera? What are the advantages/disadvantages of using SDHC/SDXC cards for backup?

Hi i have found a solutions in this post and now work for me:
https://discussions.apple.com/thread/3275447?start=45&tstart=0
"I have just got a 4GB sandisk micro sdhc card with adaptor, tryed it in my macbook pro retnia it did not work and tryed it in a 2 year old mac book no joy, i have been reading all the forums with no luck.
Went back to my macbook pro retnia put the card in and out a few times with no luck put it back in and moved it from side to side a few times bingo it worked, every time i insert it i have to move it from side to side to get it to work, i am using mountain lion 10.8.2"
Bye
Daniele aka DunDiDu

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What is the status of this Mr. Howard? To send it in, you need to call in and speak to a rep.
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If you are in another part of the world, start Here.
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↙-----------How do I give Kudos?| How do I mark a post as Solved? ----------------↓

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Did someone help you today? Press the star on the left to thank them with a Kudo!
If you find a post helpful and it answers your question, please mark it as an "Accepted Solution!" This will help the rest of the community with similar issues identify the verified solution and benefit from it.

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Please respond once this action is performed and let me know if this happens to resolve your issue. Thank you
______________________________________________________________________________________________________________Did someone help you today? Press the star on the left to thank them with a Kudo!
If you find a post helpful and it answers your question, please mark it as an "Accepted Solution!" This will help the rest of the community with similar issues identify the verified solution and benefit from it.

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BioHaz
Quote
Originally posted by me_AMD
...yes, I had USB card reader problems but it caused the computer to hang during POST, and that was fixed with BIOS v1.7...
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http://www.ordnas.it/prodotti/lett_mem/imgpr1592-01-3.jpg
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May this year, be the year of 'DO'!
I am a volunteer, and not a paid staff of Lenovo or Microsoft

X220 SDHC/SDXC card reader--speed with UHS-1

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